What he did: Tou Thao, 34, stood near the other officers as they restrained George Floyd.
The charges: Thao was charged Wednesday with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.
Thao, along with Kueng and Lane, was taken into custody Wednesday and is being held on $1 million bail, county jail records show.
His background: Thao had been a police officer with the Minneapolis Police Department since 2012.
He had six complaints filed with internal affairs, one of which was still open, according to a Minneapolis Police Department internal affairs public summary. The other five were closed without discipline.

Before becoming a police officer, Thao worked as a security guard, a stocker at a grocery store and a trainer at McDonalds. He attended the North Hennepin Community College and was pursuing an associate degree in law enforcement but didn't graduate, his personnel file shows.
Thao listed that he can speak Hmong. Minnesota has a large Hmong population.

CNN's Scottie Andrew, Josh Campbell, Eric Levenson and Sara Sidner contributed to this report.